Latest Causes of Twin Cherries and Prevention and Control Measures

Twin cherries, also called double-stigma fruit, appear as two conjoined cherries of the same size on a single fruit stalk, which severely reduces the commercial value of cherries and lowers growers' planting profits. Below, the editor introduces the symptoms, causes, and prevention and control measures of twin cherries, with the details as follows.

1. Symptom manifestation

Twin cherries, also called conjoined cherries, refer to a single fruit stalk bearing two conjoined cherries, with two seeds as well. Many people jokingly call them couple fruit. In fact, twin cherries have many problems and drawbacks during development and after ripening. Even if they are put out for sale, there are many factors such as cumbersome collection process, uncertain quantity, and few buyer groups, so their limitations are relatively great.

2. Causes of occurrence

During the period when cherries mature and one month after harvest, it is exactly the physiological differentiation stage and morphological differentiation stage of cherry flower buds. At this time, if fertilizer cannot be applied timely and reasonably, it will lead to poor differentiation of cherry flower buds, thereby producing conjoined cherries. If continuous high temperature and drought weather occur after harvest, excessive development of flower buds will lead to double-pistil flowers, and when pollination occurs the following year, twin fruit will form.

3. Prevention and control measures

When continuous high temperature and drought weather occurs, attention should be paid to shading to protect yield, especially for open-field cherry cultivation. If continuous high temperature and drought weather occurs during the flower bud differentiation stage, shade nets should be used promptly to block light and avoid excessively high temperatures. The main measure to prevent twin cherries is to strengthen fertilizer and water management after harvest during flower bud differentiation, especially 2 months after fruit harvest, which is the key period. During this period, when it is hot and dry, for fertilizer and water management, spray potassium dihydrogen phosphate once every 10 days to supplement nutrients while increasing humidity and reducing the occurrence of twin fruit. If conditions permit, greenhouse and plastic tunnel protected cultivation can be adopted to improve the regulation of temperature and humidity, and then twin fruit will rarely appear.

The above is an introduction to the causes and prevention and control measures of twin cherries. We hope it can help you. If you want to learn more related knowledge, please keep following us.